Journal ArticleDOI
Assessment of Regional Atrial Function in Patients with Hypertrophic Cardiomyopathies Using Tissue Doppler Imaging
TLDR
Strain rate imaging is reproducible, yields readily obtained parameters that provide unique data about global and longitudinal segmental atrial contraction, and can quantify the atrial dysfunction in patients with HCM.Abstract:
This study applied tissue Doppler imaging and color tissue Doppler imaging to study atrial function changes in patients with hypertrophic cardiomyopathy (HCM). The profile of the segmental atrial velocities and the strain rate were determined and compared with those of normal matched control subjects. This study investigated 20 patients with HCM and 20 age-matched healthy control subjects. In a four-chamber apical view, tissue Doppler imaging was used to measure the lateral left and right atrial (LA and RA) and interatrial septal (IAS) wall systolic, early, and late diastolic velocities. Similarly, the atrial strain rate during ventricular systole (SRS) and the early (SRE) and late (SRA) diastolic phases in patients and control subjects were measured. The interventricular septal tissue Doppler-derived isovolumic relaxation time was calculated. Only the IAS annular and middle segments showed a significant reduction in the early diastolic velocity (mean, 4.01 ± 2.2 vs 8.7 ± 1.1, p = 0.001; 3.23 ± 2 vs 6.01 ± 1.9, p = 0.001, respectively) for the patients with HCM in comparison with the control subjects. Generally, the atrial strain rate was clearly reduced. The systolic strain rate (SRS) was significantly reduced in the LA wall in the annular (p = 0.007) and middle (p = 0.001) segments and in the IAS middle segment (p = 0.007). Similarly, there was a reduction of the early diastolic strain rate (SRE) in the LA annular (p = 0.001) and middle (p = 0.01) segments and in the IAS annular (p = 0.05) and middle (p = 0.001) segments, as well as in the RA annular segment (p = 0.02). The RA middle segments showed insignificant changes. Atrial function may be affected by HCM due to impairment of myocardial diastolic function. Strain rate imaging is reproducible, yields readily obtained parameters that provide unique data about global and longitudinal segmental atrial contraction, and can quantify the atrial dysfunction in patients with HCM.read more
Citations
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Journal ArticleDOI
Left atrial function: physiology, assessment, and clinical implications
Gustavo G Blume,Christopher J. McLeod,Marion E. Barnes,James B. Seward,Patricia A. Pellikka,Paul M Bastiansen,Teresa S.M. Tsang +6 more
TL;DR: A critical appraisal of current echocardiographic techniques for the assessment of LA function and the implications of such assessment for prediction and disease prevention are provided.
Journal ArticleDOI
Left atrial strain measured by two-dimensional speckle tracking represents a new tool to evaluate left atrial function.
Roberto M. Saraiva,Sayit Demirkol,Adisai Buakhamsri,Neil L. Greenberg,Zoran B. Popović,James D. Thomas,Allan L. Klein +6 more
TL;DR: LA epsilon analysis is a new tool that can be used to evaluate LA function and correlated significantly with Doppler echocardiographic indexes that evaluated the same phase of the cardiac cycle or the same component of the LA function, including indexes derived from mitral inflow, pulmonary vein velocities, tissue Dopplers, and LA volumes.
Journal ArticleDOI
Left Atrial Mechanics: Echocardiographic Assessment and Clinical Implications
TL;DR: A critical appraisal of LA mechanics is provided, describing the fundamental concepts and methodology of LA strain and strain rate analysis, the reference values reported with different imaging techniques, and the clinical implications.
Journal ArticleDOI
Impact of aortic valve stenosis on left atrial phasic function.
TL;DR: In patients with severe AS, the 3 components of left atrial (LA) function are reduced, and active LA dysfunction is related to the severity of AS and late left ventricular diastolic function.
Journal ArticleDOI
Assessment of Left Atrial Mechanics in Patients with Atrial Fibrillation: Comparison between Two-Dimensional Speckle-Based Strain and Velocity Vector Imaging
Hirohiko Motoki,Arun Dahiya,Mandeep Bhargava,Oussama M. Wazni,Walid Saliba,Thomas H. Marwick,Allan L. Klein +6 more
TL;DR: LA ε measurement using both VVI and 2D STE is feasible in a large proportion of patients in clinical practice and provides comparable LA ε and SR measurements for LA contractile function.
References
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Journal ArticleDOI
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TL;DR: Recovery of left atrial mechanical function is related to the duration of atrial fibrillation before cardioversion, and these findings have important implications for assessing the early hemodynamic benefit of successful cardioversion.
Journal ArticleDOI
Importance of left atrial function in patients with myocardial infarction.
Yasuo Matsuda,Yoichi Toma,Hiroshi Ogawa,Masunori Matsuzaki,Kazuhiro Katayama,Takashi Fujii,Yoshino F,K Moritani,T Kumada,Reizo Kusukawa +9 more
TL;DR: The left atrial contribution to left ventricular function is increased in patients with remote myocardial infarction, attributed to the Frank- Starling mechanism in the left atrium.
Journal ArticleDOI
Contraction and relaxation velocities of the normal left ventricle using pulsed-wave tissue Doppler echocardiography.
TL;DR: The hypothesis that a heterogeneous pattern of longitudinal systolic and diastolic velocities exists among individual left ventricular wall segments is tested, and heterogeneity in longitudinal function is consistent with the known spatial distribution of myocardial fibers.